Pixsys ATR 902 User manual

ATR 902
Controller
User manual

Table of contents
1 Safety guide lines ................................................................................................................................10
2 Model identication...........................................................................................................................10
3 Technical data......................................................................................................................................10
3.1 General features.........................................................................................................................10
3.2 Hardware features..................................................................................................................... 11
3.3 Software features ......................................................................................................................11
4 Size and Installation...........................................................................................................................11
5 Electrical wirings .................................................................................................................................12
5.1 Wiring diagram..........................................................................................................................12
6 Displays and keys function...............................................................................................................12
6.1 Numeric indicators (Display)..................................................................................................13
6.2 Meaning of Status Lights (Led) ..............................................................................................13
6.3 Keys................................................................................................................................................14
7 Programming and conguration...................................................................................................15
7.1 Programming (or modifying) cycle data.............................................................................15
8 Cycle start..............................................................................................................................................17
8.1 Start of a cycle and setting of delayed start .......................................................................17
8.2 Fast advancement function ...................................................................................................17
8.3 Simple controller function ......................................................................................................18
9 Programmer functions ......................................................................................................................18
9.1 Hold function..............................................................................................................................18
9.2 Automatic Tuning......................................................................................................................18
9.3 Manual Tuning...........................................................................................................................19
9.4 Recovery of interrupted cycle.................................................................................................19
9.5 Waiting step end........................................................................................................................21
9.6 Loading default values ............................................................................................................21
10 Table of con guration parameters................................................................................................23
10.1 1st level parameters..................................................................................................................23
10.2 2nd level parameters (for expert operators) ......................................................................27
11 Alarm intervention modes................................................................................................................29
12 Table of Anomaly Signals..................................................................................................................31

User manual - ATR902 - 7
Introduction
Thanks for choosing a Pixsys device.
The plug-in controller ATR902 is specially dedicated to applications in the glass,
metal and pottery industry.
This controller provides high accuracy of the programmed ring cycle and reliable
monitoring of the temperature. It can store up to 15 completely congurable
programs, each consisting of max. 18 segments. The rst 5 cycles can be associated
to a mnemonic name (see parameters 48-52). Delayed start is also available as
well as other software functions. A relay output can be congured as alarm. All
parameters are protected by a password to avoid unauthorized access.
1 Safety guide lines
Read carefully the safety guidelines and programming instructions contained in
this manual before using/connecting the device.
Disconnect power supply before proceeding to hardware settings or electrical
wirings.
Only qualied personnel should be allowed to use the device and/or service it
and in accordance to technical data and environmental conditions listed in this
manual.
Do not dispose electric tools together with household waste material.
In observance European Directive 2002/96/EC on waste electrical and electronic
equipment and its implementation in accordance with national law, electric tools
that have reached the end of their life must be collected separately and returned
to an environmentally compatible recycling facility.
2 Model identication
The ATR902 series includes only one version which is described into the following
table:
Power supply 230 Vac ±15% 50/60Hz – 3VA
ATR902-12ABC 1 sensor input + 2 relays 1A
3 Technical data
3.1 General features
Display 4 display 0,50’’ - 4 display 0,30’’ - 12 red led
Operating
temperature 0-45°C, humidity 35..95uR%
Sealing IP54 on front panel
Material Shock-resistant polystyrene
Weight Approx. 400 g

8 - ATR902 - User manual
3.2 Hardware features
Sensor input
AI1 - Congurable for
Thermocouple
K,S,R,J,T,E,N.
Cold junction automatic
compensation 0 ... 50°C.
Accuracy (25°C)
+/-0.2 % ± 1 digit (full
scale).
Cold junction accuracy
0.1°C/°C
Relay outputs
2 Relays congurable as
control output and alarm
relay (safety or auxiliary)
Contacts: 1A-250V~ for
resistive charges
3.3 Software features
Regulation
Algorythm
ON-OFF with hysteresis.
P, PI, PID, PD proportional time.
Proportional band 0...9999°C or °F
Integral time 0,0...999,9 sec (0 excludes integral function)
Derivative time 0,0...999,9 sec (0 excludes derivative function)
Controller functions Manual or automatic tuning, selectable alarms,
Interruped cycle recovery, Waiting, Delayed start
Programmable
cycles
15 (max 18 steps each) + function “simple controller” with
programmable setpoint
4 Size and Installation
Optional: support for panel-mounting Cod. 1300.20.043

User manual - ATR902 - 9
5 Electrical wirings
This device has been designed and manufactured in conformity to Low Voltage
Directive 2006/95/EC , 2014/35/EU (LVD) and EMC Directive 2004/108/EC, 2014/30/
EU (EMC). For installation in industrial environments please observe following
safety guidelines:
• Separate control line from power wires.
• Avoid proximity of remote control switches, electromagnetic contactors,
powerful engines and use specic lters.
• Avoid proximity of power groups, especially those with phase control.
• It is strongly recommended to install adequate mains lter on power supply of
the machine where the controller is installed, particularly if supplied 230Vac. The
controller is designed and conceived to be incorporated into other machines,
therefore CE marking on the controller does not exempt the manufacturer of
machines from safety and conformity requirements applying to the machine
itself.
5.1 Wiring diagram
1_ Neutral
2_ Neutral
3_ Thermocouple +
4_ Thermocouple -
5_ Power supply (phase)
6_ Control output (phase)
7_ Aux output (phase)
8_ Not Connected
Optional: multipolar connector (Cod. 0400.70.001).
6 Displays and keys function
1
2
7
11
16
17
13
14
4
3
5
10
8
9
12 15

10 - ATR902 - User manual
6.1 Numeric indicators (Display)
1123.4
Usually visualizes mesured temperature, it may visualize also
(programmed temperature)
setpoint value, time elapsed from cycle start, number of
operating step or the percentage value of the command
output. During con guration it visualizes the value of
entering parameter.
2 123.4 Visualization can be customized with setpoint, time elapsed
from cycle start or number of operating step. During
conguration it visualizes the value of entering parameter.
6.2 Meaning of Status Lights (Led)
3C1 ON when the heating elements are activaved.
4A1 ON when alarm 1 is active.
5TUN ON when controller is executing an auto-tuning cycle.
7RUN
ON when the device is in START cycle or in “Simple controller”
mode.
Blinking LED indicates the standby of the controller
8ON when the programmer is executing a rising step.
9ON when the programmer is executing a maintenance step.
10 ON when the programmer is executing a falling step.
11
Cycle progress.
Flashing Led shows the step being
executed; Fixed Led shows the step
already done.

User manual - ATR902 - 11
6.3 Keys
12
• In conguration allows to scroll and modify parameters
• Scroll cycles to be started or modied.
• In cycle programming allows to modify time and setpoint values.
• Modies the setpoint during “simple controller” function (tHEr).
• Allows a fast advancement of the cycle when it is in “START”.
13
• In conguration allows to scroll and modify parameters.
• Scroll cycles to be started or modied.
• In cycle programming allows to modify time and setpoint values.
• Modies the setpoint during “simple controller” function (tHEr).
• Allows a fast retrograde of the cycle when it is in “START”.
14 STEP
• With controller in STOP allows to visualizes the duration of the last
cycle (if chronometer is enabled).
• In programming allows to conrm a value and move to the next one.
• With controller in START allows to visualize cyclically the setpoint and
the other process value.
15 CYC LE
• With controller in STOP allows to select cycles to start or modify and
to enter parameters conguration.
• In conguration allows to modify the selected parameter and to
conrm the entered value.
• During a cycle, to activate/deactivate HOLD function, press for 1
second.
• In conguration allows to visualize the selected parameter in
mnemonic or numeric way.
16 STA R T
STOP
• Starts a new cycle or Stops the one which is being execute.
• Operates as exit key (ESCAPE) during cycles or parameters congura-
tion.
17 ON
OFF • Switches the controller OFF (standby) and ON.

12 - ATR902 - User manual
7 Programming and conguration
There are two programming levels:
1. Cycles programming (for operator/user), to enter time/setpoint values for each
step of cycle.
2. Conguration (for manufacturer/installer of plant), to enter main parameters
(sensor type, output type, intervention type alarm/auxiliary ext.).
7.1 Programming (or modifying) cycle data
• With or without starting setpoint
•With or without timed auxiliary outputs1
When controller is in STo P follow the points below.
Press Display Do
1CYC LE Red display visualizes c Y . 01
At each pression selects the next
cycle (cY.02 for cycle no.2 up to
c Y .1 5 for cycle 15).
7.1.1 Programming of starting setpoint (if not congured, see
par. 6.1.2)
The selection of an initial setpoint (a specic starting temperature of the cycle)
grants the correct gradient if the kiln is still heat from a previous process.
Press Display Do
2STEP
Red display visualizes 00-5*.
Green display shows the
“starting setpoint”.
Otherwise pass to point 4.
At any time press STA RT
STOP to exit
programming.
3Increases, decreases value on
green display.
Select starting setpoint (starting
temperature).
1 This section includes all available options for the cycle programming. Some of these steps can be
omitted if not all the controller functions are used. We recommend the manufacturer to indicate into
the kiln documentation the correct sequence of operations.

User manual - ATR902 - 13
7.1.2 Programming of the step (segment)
Press Display Do
4STEP Red display visualizes 01 - t.
Green display shows step time.
5
Increases, decreases value on
green display.
N.B.:Each cycle is composed of
max. 18 programmable steps,
after those it skips automatically
to point 10.
Enter the step duration in
hours:minutes.
N.B.: Set --.-- for endless time or
end for cycle end (if not all steps
are used) and skip to point 10.
6STEP
Red display visualizes 01 - S . Green
display shows the step setpoint
(temperature that has to be
reached within given time).
With or select the setpoint
(temperature reached at step end).
7.1.3 Programming of the alarm/auxiliary (if congured)
Press Display Do
7STEP
Red display visualizes 01 - A .
Green display shows A1 -o f or
A1 -on.
If A L .1 is not programmed as
auxiliary time (a.o.r.s. ) skip to
point 10.
8
Select auxiliary output status
during the step: A1 -on for active
output and A1 -o f for not active
output.
9STEP Back to point 4.
7.1.4 End programming
Press Display Do
10 STEP
The controller backs to STOP
mode, saving the cycle. Red
display visualizes stop .

14 - ATR902 - User manual
8 Cycle start
8.1 Start of a cycle and setting of delayed start
Red display visualizes stop .
Press Display Do
1CYC LE Red display visualizes the cycle
selection.
Press CYCLE to scroll the cycles
(cy .02 for cycle no. 2 - c y .1 5 for
cycle no. 15) until visualize the
chosen cycle.
2STA R T
STOP
Cycle starts. Buzzer sounds briey.
Green display shows the process
while red display shows the
setpoint introduced on parameter
14 ui . d .2
NB: only cycles already
programmed can start.
If delayed start is active (see parameter 15 de.st.) proceed as follows:
Press Display Do
3STA R T
STOP
Red display visualizes W Ai t Green
display shows (ashing)the
programmed waiting time.
4Increases or decreases the initial
waiting time (hour:minutes).
5STA R T
STOP
Waiting starts.
When the programmed time
expires, cycle will start.
Press or to modify the
time.
8.2 Fast advancement function
During functioning or after a restart it can be useful to move onwards or backwards
the cycle in progress, to reach chosen setpoint value.
Press Display Do
1STA R T
STOP
Forwards or backwards (each
beep of internal buzzer means
one minute).
To end the cycle and stop the
controller before the normal
conclusion, press S TAR T
STOP for a 1”.

User manual - ATR902 - 15
8.3 Simple controller function2
When this function is active, the controller cannot manage a step cycle but it
regulates according to a single setpoint (programmed temperature) which is
selectable by the user.
Press stop and follow the points below:
Press Display Do
1CYC LE Red display visualizes the selected
cycle. Increase until visualize tHer
.
2STA R T
STOP
Red display visualizes spu while
green display shows the setpoint.
3Increases or decreases the
setpoint value. Enter the chosen setpoint.
4STA R T
STOP
The controller modulates the
command output to keep the
programmed temperature.
5STEP Visualizes ciclically the controller
values.
To modify the setpoint spu press
STEP and the arrow keys.
To exit this function, press S TART
STOP
for 1”.
9 Programmer functions
9.1 Hold function
This function allows to interrupt a cycle: red display visualizes h o Ld and cycle is
stopped. It is possible to modify setpoint pressing or .
To start this function proceed as follows:
• Enter conguration and select en. on parameter 17 HLd . f.
• With cycle in progress press C YCL E for 1”: function will be started or stopped.
9.2 Automatic Tuning
This procedure allows the user to have a precise regulation also without knowledge
of PID regulation. Selecting auto on parameter 06 tune , controller check process
oscillations and modies PID parameters if the dierence between process and
setpoint values is greater than value on parameter 53 m.G. tu .
Parameters 53 m .G. tu ., 54 mn.p.b., 55 ma.p.b. and 56 mn.i.t. can be modied
entering the password 5678.
2 Access to this function may be enabled on parameter 16 sp. fu.

16 - ATR902 - User manual
9.3 Manual Tuning
This procedure allows user a greater exibility on deciding when to update PID
parameters. To enable this function, select man. on parameter 06 tune . To start
manual tuning procedure follow the points below (when cycle is running):
Press Display
1STEP Press until red display visualizes tune .
2Green display shows on, TUN turns on and procedure starts.
Controller activates output increasing the process value as indicated on parameter
07 s.d.tu.
Than, it turns o the ouput and calculates the new PID parameters.
It is possible to end this procedure any time, following the points below:
Press Display
1STEP Press until red display visualizes tune .
2Green display shows o ff
, TUN turns o and procedure ends. PID
parameters will not be modied.
9.4 Recovery of interrupted cycle
Recovery function is particulary useful for kilns temperature regulation. After
a power failure, at restarting ATR902 can resume the interrupted cycle. There
are two recovery modes:
9.4.1 Recovery with automatic gradient
To enable cycle recovery with automatic gradient, set 1 on parameter 22 r.i . c y. At
restart, after a power failure, controller will operate like this:
1. If a power failure occurs during a rising step, the gradient will be same as the
operating step (setpoint temperature equal to the temperature read by the
sensor).
2. If a power failure occurs during a holding step, two options are available: If gap
between process and setpoint is limited (not exceeding the value on parameter
21 m .G.s . e.) cycle will resume from the point of interruption; if the gap is bigger
but controller has not yet executed a cooling step, the cycle will go back to the
closest rising step and will repeat the procedure as explained on point 1.
3. If a power failure occurs during a cooling step or a holding step, after that a
cooling step has already been completed, the setpoint will match the the
temperature read by the sensor, without including any rising and even skipping
to next step if necessary (this a safety tip particularly for glass working).

User manual - ATR902 - 17
Temperature
Time
PROCESS
SETPOINT
Step 1
Step 2
Black-out
Step 2
Step 3
NB: After a power-o the chronometer
will restart from 00:00.
9.4.2 Recovery with programmable recovery gradient
To enable cycle recovery with a recovery gradient, enter on parameter 22 r.i . cy .
a value (degrees/hour if temperature) greater than 1. At restarting if the kiln
temperature (process) is lower than the setpoint, ATR902 locks the working cycle
executing a step with the rising gradient set on parameter 22 r.i . c y . to return to
the setpoint value entered before the power failure and the cycle restarts form
that point. In recovery mode the point on the right of the red display ashes and
display shows rec instead of the cycle number.
Temperature
Time
SETPOINT
Step 1
Step 2
Black-out
Step 2
Recovery step with
programmable
gradient (Par. 22)
Step 3
PROCESS
Recovery will start only for holding or
rising steps.
To exit manually from recovery mode
press or .

18 - ATR902 - User manual
9.5 Waiting step end
This function has been conceived to control kilns working cycles, whenever the
kiln cannot follow gradients programmed by the user. If at step end the di erence
between process and setpoint values is greater than the value on
parameter 21 m .G.s . e., controller starts with the next step only after waiting for the
time programmed on parameter 20 w.t.s.e., or when this gap becomes lower than
parameter 21 m .G.s . e.
Temperature
Time
SETPOINT
Step 1 Step 2
Waiting time step end (Par. 20)
Step and max. gap (Par. 21)
Step 3
PROCESS
To exit manually from this function press
. To disable this function x at 0 end
step waiting time w.t.s.e.. During end step
waiting red display shows w ai t
instead of
the cycle number.
9.6 Loading default values
This procedure allows to restore all default settings.
Press stop and follow the points below:
Press Display Do
1CYC LE Press for 5”. Green display shows 0000 with 1st digit  ashing, red
display visualizes pass.
2
STEP
Flashing digit on green
display changes. Enter the password 9999.
3STEP Device loads default settings.
Entering password 9999 all default parameters will be loaded. If it is necessary to
cancel and reset also the cycles, enter password 9989.

User manual - ATR902 - 19
Conguration for installer
To enter conguration parameter it is necessary to stop the controller.
Press Display Do
1CYC LE Press for 5”. Green display shows 0000 with 1st digit  ashing, red
display visualizes pass.
2
STEP
Flashing digit on green
display changes. Enter the password 1234.
3STEP
On green display appears the rst
parameter while red dislay shows
the value.
4CYC LE
Allows to switch from mnemonic
(parameter name) to numeric
(parameter number) visualization
(and vice versa).
5Scrolls parameters. Select the parameter to be
modied.
6STEP
Allows to modify parameter: red
display visualizes (ashing) the
value of the selected parameter.
7Increases or decreases the
visualized value. Enter the new data.
8STEP Conrms data entering (red
display stops ashing).
To modify another parameter
back to point 5.
9STA R T
STOP
Conguration ends.
The controller is in stop .
Entering password 1234 it is possible to modify the rst level parameters.
If it is necessary to modify those of second level, enter password 5678.

20 - ATR902 - User manual
10 Table of con guration parameters
10.1 1st level parameters
1
Sen .
Sensor
Select type of sensor.
tc. k Thermocouple type K. Range: -260..1360°C > Default
tc. S Thermocouple type S. Range: -40…1760°C
tc. r Thermocouple type R. Range: -40…1760°C
tc. J Thermocouple type J. Range: -200…1200°C
tc. t Thermocouple type T. Range: -260…400°C
tc. E Thermocouple type E. Range: -260…1000°C
tc. n Thermocouple type N. Range: -260…1280°C
2
o . c a L.
Oset Calibration
Number added to visualized process (normally it corrects ambient
temperature value).
-99.9…+99.9 tenths of degree. Default: 0.0.
3
G. c a L.
Gain Calibration
Number multiplied with process value to calibrate working point.
-99.9%…+99.9%. Default: 0.0.
4
u p.L. s .
Upper Limit Setpoint
Setpoint upper limit.
0…+3200 degrees. Default: 1250.
5
d EG r.
Degree
Select type of degree.
Centigrade. > Default.
Fahrenheit.
6
Tu n e
Tune
Select autotunig type.
Di s . Disabled. > Default.
Auto. Automatic. Controller checks constantly the process value and
modies P.I.D. values (if necessary).
Man. Manual. Started by keys.
7
s.d.tu.
Setpoint Deviation Tune
Selects deviation from command setpoint as threshold used by manual
tuning to calculate P.I.D. parameters.
0.0…500.0 tenths of degree. > Default: 5.0.